JPH02271481A - Automatic correction type pattern reader - Google Patents

Abstract

PURPOSE:To generate correct pattern data in a short time even in the case of a handwritten drawing by generating pattern data by correcting automatically a defect part on a pattern drawing. CONSTITUTION:When a scanning part 1 scans on a pattern drawing 6 in order of scanning lines S1, S2... Sn, pattern information is converted to electric signals of S1', S2'... Sn', stored in a temporary storage part 2, and sent to an automatic correcting part 3. The correcting part 3 detects abnormality A of a pattern P2 from the electric signals S1', S2'... Sn', and also, detects an approach B of the patterns P2, P3 from the electric signal Sn', corrects data, stores it in a data storage part 4, and it is fetched as pattern data.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic correction pattern reader, and more particularly to an automatic correction pattern reader for creating pattern data for printed circuit boards and the like.

[Conventional technology]

Conventionally, the means for creating this type of pattern data is to digitize a pattern diagram as it is, either manually or by using an automatic reader. That is, this is done by reading the X and Y coordinates of the pattern on the drawing as they are, regardless of the presence or absence of defects.

[Problem to be solved by the invention]

The conventional pattern reading described above has the disadvantage that it requires a lot of man-hours because it is digitized one by one (X, Y coordinate reading) when done manually, and automatic digitization can cause defects in pattern drawings. Even if there is, it has the disadvantage that it is converted into data as is.

SUMMARY OF THE INVENTION An object of the present invention is to provide an automatic correction pattern reader that can read and automatically correct defective locations on a pattern diagram.

[Means to solve the problem]

The automatic correction pattern reader of the present invention includes a scanning section that converts pattern data into electrical signals by scanning a pattern diagram, a temporary storage section that sequentially temporarily stores the outputs of the scanning section, and a continuous A correction section that detects abnormalities from data displacement and automatically corrects them; a data storage section that stores pattern data automatically corrected by this correction section; and an output section that outputs the corrected pattern data as necessary. It is composed of:

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of an automatic correction pattern reader showing an embodiment of the present invention.

As shown in FIG. 1, this embodiment includes a scanning section 1 that scans a pattern diagram and converts the pattern drawn on the drawing into an electrical signal, and an output of the scanning section 1 that is converted into an electrical signal. a temporary storage unit 2 such as a semiconductor memory that sequentially stores data;
An automatic correction section 3 that detects and automatically corrects abnormalities based on the difference between the displacement of the continuous pattern data stored in the - time storage section 2 and the set data, and data that stores the pattern data automatically corrected by this correction section 3. It has a storage section 4, an output section 5 for outputting the corrected pattern data as necessary, and a processing control device (not shown) for controlling the operation of each of these sections 1 to 5. configured.

FIG. 2 is a diagram of the pattern scanned by the scanning unit in FIG. 1, and FIGS. 3(a) and (b) are scanning signal waveform diagrams corresponding to the scanning lines shown in FIG. It is a signal waveform diagram.

As shown in FIG. 2, there are three patterns PL, P2. P3 is drawn, indicating that the pattern P2 has defects including a missing portion A and a portion B approaching the adjacent pattern P3.

The patterns P1 to P3 on the pattern diagram 6 are scanned in the direction of the arrows of scanning lines S1 to Sn shown by dotted lines.

As described above, the scanning unit 1 scans the pattern diagram 6 shown in FIG.
Scan lines Sl, S2 . S3. −． When scanning in the order of Sn, SL'S2', S3'', - shown in FIG. 3(a) are obtained.
--, converts the pattern information into an electrical signal of Sn'. The electrical signals SL', S2'83', . The correction section 3 detects the abnormality A of the pattern P2 from the displacement of the electric signals Sl' to S3', and corrects the data C as shown in the electric signal 82'' shown in FIG. 3(b). From the electrical signal Sn' shown in FIG. 3(a), pattern P2.
The proximity B of P3 is also detected, and the data D is corrected as shown in the electrical signal Sn'' shown in FIG. As a result, even if there are some mistakes or defects on the pattern diagram such as a handwritten drawing, these can be automatically corrected and correct pattern data can be read.

〔Effect of the invention〕

As explained above, the automatic correction pattern reader of the present invention can create pattern data by automatically correcting defects on a pattern diagram, so even if the object to be read is a handwritten drawing, it can be read quickly. This has the effect that correct pattern data can be created.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an automatic correction pattern reader for explaining an embodiment of the present invention, FIG. 2 is a diagram of a pattern scanned by the scanning section in FIG. 1, and FIG. b
) are a scanning signal waveform diagram and a signal waveform diagram after automatic correction corresponding to the scanning lines shown in FIG. 2, respectively. DESCRIPTION OF SYMBOLS 1... Scanning part, 2... -time storage part, 3... Automatic correction part, 4... Data storage part, 5... Output part, 6...
・Pattern diagram, P1 to P3...Pattern, S1 to Sn
...Scanning line, A... Missing part, B... Approaching part, C,
D...Correction signal.

Claims (1)

[Claims] A scanning unit that converts pattern data into electrical signals by scanning a pattern diagram, a temporary storage unit that sequentially temporarily stores the output of the scanning unit, and an abnormality that is detected from the displacement of the sequentially stored continuous data and automatically corrected. an automatic correction type comprising: a correction section for correcting pattern data automatically corrected by the correction section; a data storage section for storing pattern data automatically corrected by the correction section; and an output section for outputting the corrected pattern data as necessary. pattern reader.